Libc update to simplify merge.

Bumping libc files for unsupported architectures, to simplify merging.
A bunch of small fixes:
 * in libutil update
 * the macro in endian.h
 * some undefined types due to clear separation from host.
 * Fix a warning for cdbr.c

Some modification which were required for the new build system:
 * inclusion path for const.h in sconst, still hacky
 * Removed default malloc.c which conflicts on some occasions.

lib/libc/arch/alpha/gen/makecontext.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: makecontext.c,v 1.4 2008/04/28 20:22:55 martin Exp $	*/
+/*	$NetBSD: makecontext.c,v 1.6 2011/09/20 08:42:29 joerg Exp $	*/
 
 /*-
  * Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: makecontext.c,v 1.4 2008/04/28 20:22:55 martin Exp $");
+__RCSID("$NetBSD: makecontext.c,v 1.6 2011/09/20 08:42:29 joerg Exp $");
 #endif
 
 #include <stddef.h>
@@ -41,6 +41,8 @@ __RCSID("$NetBSD: makecontext.c,v 1.4 2008/04/28 20:22:55 martin Exp $");
 
 #include <stdarg.h>
 
+void __resumecontext(void) __dead;
+
 void
 makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
 {
@@ -49,8 +51,6 @@ makecontext(ucontext_t *ucp, void (*func)(void), int argc, ...)
 	unsigned long *sp;
 	va_list ap;
 
-	void __resumecontext(void);
-
 	/* Compute and align stack pointer. */
 	sp = (unsigned long *)
 	    (((uintptr_t)ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & ~0x7);